Yanmar Marine has announced the introduction of a new generation of it’s BY Series lightweight diesels, two years after the first of these electronically controlled common rail engines became available. The BY2 Series diesels, with NMEA 2000 CAN-bus technology, will provide the same output as their predecessors, the four-cylinder 150hp (110kW) and 180hp (132kW) models, plus six-cylinder versions at 220hp (162kW) and 260hp (191kW), all rated at 4,000rpm. As before, they all meet the latest EPA and RCD emissions regulations. The new BY2 Series engines will have many improvements incorporated. These include a fully jacketed water-cooled exhaust manifold. There are modifications to the turbocharger and heat exchanger, along with a full metal top cover, which provides protection to the fuel system components below and results in a lower profile of 23mm. The engine control unit (ECU) has been reprogrammed from torque to speed control, providing smoother operation and better synchronization on twin engine applications. A glow plug controller has been added as standard equipment, which virtually eliminates cold start white smoke. To provide easier installation of the engines and future servicing, the fuel inlet and return connections on the engine are now incorporated into a single manifold mounted on the lower side of the engine, along with a new two-piece flywheel housing for both sterndrive and inboard applications. December 17, 2008
Engine: Yanmar BY2 Series 260hp
Yanmar Marine has announced the introduction of a new generation of it’s BY Series lightweight diesels, two years after the first of these electronically controlled common rail engines became available. The BY2 Series diesels, with NMEA 2000 CAN-bus technology, will provide the same output as their predecessors, the four-cylinder 150hp (110kW) and 180hp (132kW) models, plus six-cylinder versions at 220hp (162kW) and 260hp (191kW), all rated at 4,000rpm. As before, they all meet the latest EPA and RCD emissions regulations. The new BY2 Series engines will have many improvements incorporated. These include a fully jacketed water-cooled exhaust manifold. There are modifications to the turbocharger and heat exchanger, along with a full metal top cover, which provides protection to the fuel system components below and results in a lower profile of 23mm. The engine control unit (ECU) has been reprogrammed from torque to speed control, providing smoother operation and better synchronization on twin engine applications. A glow plug controller has been added as standard equipment, which virtually eliminates cold start white smoke. To provide easier installation of the engines and future servicing, the fuel inlet and return connections on the engine are now incorporated into a single manifold mounted on the lower side of the engine, along with a new two-piece flywheel housing for both sterndrive and inboard applications. 
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The picture is from a BY (1) not a BY2 i own the BY2 and i'm glad that i switched from Volvo to Yanmar !!!
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